class Phone {
    private String brand; // 品牌
    private String type; // 型号
    private double price; // 价格
    private String os; // 操作系统
    private int memory; // 内存
    public Phone(String brand, String type, double price, String os, int memory) {
        this.brand = brand;
        this.type = type;
        this.price = price;
        this.os = os;
        this.memory = memory;
    }
    public void about() {
        System.out.println("品牌: " + brand);
        System.out.println("型号: " + type);
        System.out.println("价格: " + price);
        System.out.println("操作系统: " + os);
        System.out.println("内存: " + memory + "GB");
    }
    public void call(String no) {
        System.out.println("正在拨打号码: " + no);
    }
    public void playGame() {
        System.out.println("正在玩游戏");
    }
    public void downloadMusic() {
        System.out.println("正在下载音乐");
    }
    public void playMusic() {
        System.out.println("正在播放音乐");
    }
    public static void main(String[] args) {
        Phone phone = new Phone("小米", "13", 3999.0, "Android", 12);
        phone.about();
        phone.call("12345678900");
        phone.playGame();
        phone.downloadMusic();
        phone.playMusic();
    }
}